因此，我们正处在发现地球生命及其组成成分和基础基因的最初阶段。
So we're at the earliest stages of discovery about basic genes, components and life on this planet.
他指出，即便相当临近的文明(比如距离1000光年以外)通过望远镜发现地球，那么它看到的是我们1000年前的过去。
He points out that if even a fairly close civilization, say 1, 000 light years away, were to look through a telescope and find Earth, it would see the planet 1, 000 years in our past.
也许再过一万年，人类注视的那片星空依旧空旷而寂静，但也许明天我们醒来就会发现地球轨道上停着一艘月球般大小的外星飞船。
Perhaps in ten thousand years, the starry sky that humankind gazesupon will remain empty and silent, but perhaps tomorrow we'll wake up and findan alien spaceship the size of the moon parked in orbit.
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